____ made things worse, he said, was that his roommate never took part in any of the cleaning work．
| A．What | B．Which | C．That | D．Who |
—It’s such a beautiful day． Why not have a picnic with us?
—_____． But I have a lot of homework to do．
| A．Don’t mention it | B．It’s up to you |
| C．I have no time | D．I’d love to |
—Listen! There is a knock on the door． Who _____ it be?
—It must be Jack． Just now I sent for him．
| A．shall | B．can | C．must | D．might |
—What made her so happy?
—_____ her son passed the driving test．
| A．That | B．Because | C．Since | D．When |
I would have come earlier, but I _____ that you were waiting for me．
| A．didn’t know | B．hadn’t known |
| C．haven’t known | D．wouldn’t have known |
During the opening ceremony, “Miss Smile” has won the hearts of Chinese Internet users after bei
ng caught _____ the same smile for nearly 20 minutes．
| A．fixed | B．to be fixed |
| C．to fix | D．fixing |